英语虚拟语气问题，多道

Question

1._____you a more valuable present for your birthday,but I was short of money at that time
Amust have bought Bhad bought Cwould have bought Dwould buy
问：一答案再稍微讲解一下下•••••••。二如何判断哪个是主句，哪个是从句？ 答案是C

以下均为“答案再稍微讲解一下下”
2.______he come ,the problem would be settled.
Awould Bshould Cshall Dif 答案B
3．Read It aloud so that I ------you cleary 。
Acan hear B will hear Chear Dhave hear 答案A
4.------would you have called her up if it had been possible?
-------yes,but I ______busy doing my homework.
Awas Bwere Chad been Dwould be 答案A
5.Tom would buy that bicycle but he ________no money
Ahad Bhas Chad had Dhas had 答案B
6,------Why do not you explain it to her?
------ I ____it to her if I thought she would understand.
Awould explain Bwill explain Cexplain Dwould have explained 答案A
7．We______our lives had it not been for the policeman
Awould have lost Bshould lost Cmight lost Dcould have lost 答案A
8．i do not have job .i would find one but I ______no time
Ahad Bdid not have Chad had Dhave 答案D

Answer 1

1. C
由后句but...可知前句为对过去动作的虚拟，所以用would have done sth结构。
单句出现的虚拟语气，除了if only引导的句子之外，都是主句。

2. B
可以省略if的条件状语从句中，被提前的句首词只能是should/were/had，排除ACD.
此题为对将来动作的虚拟。

3．A
so that的虚拟语气，要求其从句谓语由“情态动词 + 动词原形”构成。

4. A
该题从would you have called her up if it had been possible?来看，是对过去动作的虚拟，所以but后面所表示的实际情况发生在过去，所以用过去进行时为最佳答案。

5. B
该题从前句Tom would buy that bicycle是对现在动作的虚拟，所以but后面引导的表示实际情况的句子时态为一般现在时。

6. A
从句意来看，答句是对将来动作的虚拟，所以主句用would do sth.

7．A
had it not been for the policeman = if it had not been for the policeman，表明是对过去的虚拟，所以主句用would have done sth.

8．D
此题but之后为实际的现在的情况，并非虚拟，所以只用have即可。

参考资料：原创回答团（第159号团员）

Answer 2

我们经常说IF 引导 从句，你拿到句子翻译一下， if 能加在那个句子前那个就是从句，另外一个就是主句。
你把句子意思翻译出来 再结合 各个 助动词（would should 等）的意义
在结合一点语感就能选出正确答案了
你要详细的语法讲解，网上有很多，这里我就不多说了

Answer 3

1,表示过去应该做但没有做的事情用完成时，排除A B 从意思上看，从句想说我笨开应该给你买个更有价值的礼物的，MUST表示必须，有强制性，WOULD表示应该 。从句一般为表条件，时间等，比如，不下雨的话，我们就去郊游。不下雨的话是从句。

Answer 4

1，后面是主语，过去式的虚拟语气 I would have bought you .....,省掉了主语